Further information: Pork belly § Korea
Directly translated from Korean, samgyeop-sal (삼겹살) means "three layer flesh," referring to striations of lean meat and fat in the pork belly that appear as three layers when cut. In Korea, the word samgyeop-sal, meaning "pork belly", often refers to samgyeop-sal-gui (grilled pork belly), in the same way that the word galbi, meaning "ribs", often refers to galbi-gui (grilled beef ribs). Gui refers to roasted, baked, or grilled dishes.
One can also find ogyeopsal (오겹살), with an o meaning "five". Ogyeop-sal includes the skin part of the pork belly, unlike samgyeop-sal where the skin is removed. This corresponds with the Chinese word for pork belly, wǔ huā ròu (五花肉) or "five flower meat", as the Chinese pork belly usually includes the rind.